Electronegativity of Halogens

Question 1

define electronegativty

Answer 1

ability of an atom in a covalent bond to attract the shared electron towards itself

Question 2

as we go down group 7, electronegativity…

Answer 2

decreases

Question 3

why does electronegativity decrease down the group

Answer 3

• more full electron shells
• larger atomic radius
• distance between nucleus and outer shell electron increases
• this outweighs the increasing nuclear charge

Question 4

describe the position of the electron in ICl

Answer 4

• closer to the chlorine atom
• chlorine is more electronegative than iodine